\subsection{Activity Element}
\label{sec:activity}

The \xmlelement{activity} element describes whether the owner of the device
has recently been actively using the device or not.  It can take the
values ``active'' and ``inactive''.  For example, for a PC, the value
``inactive'' may be inferred from the lack of keyboard and mouse
activity. For a telephone, an ongoing call translates into ``active''.

\motivation{The idle indication has been available in many ``finger''
implementations for several decades.}

\motivation{The \xmlelement{activity} indication provides a qualitative
indication that reveals less information to watchers than
the \xmlelement{idlesince} element}.
